The European Secretary bowed.

“You do me no more than justice, sir.  Until this morning I have never breathed one word to my wife upon this matter.”

“Could she have guessed?”

“No, Mr. Holmes, she could not have guessed—­nor could anyone have guessed.”

“Have you lost any documents before?”

“No, sir.”

“Who is there in England who did know of the existence of this letter?”

“Each member of the Cabinet was informed of it yesterday, but the pledge of secrecy which attends every Cabinet meeting was increased by the solemn warning which was given by the Prime Minister.  Good heavens, to think that within a few hours I should myself have lost it!” His handsome face was distorted with a spasm of despair, and his hands tore at his hair.  For a moment we caught a glimpse of the natural man, impulsive, ardent, keenly sensitive.  The next the aristocratic mask was replaced, and the gentle voice had returned.  “Besides the members of the Cabinet there are two, or possibly three, departmental officials who know of the letter.  No one else in England, Mr. Holmes, I assure you.”

“But abroad?”

“I believe that no one abroad has seen it save the man who wrote it.  I am well convinced that his Ministers—­that the usual official channels have not been employed.”

Holmes considered for some little time.

“Now, sir, I must ask you more particularly what this document is, and why its disappearance should have such momentous consequences?”

The two statesmen exchanged a quick glance and the Premier’s shaggy eyebrows gathered in a frown.

“Mr. Holmes, the envelope is a long, thin one of pale blue colour.  There is a seal of red wax stamped with a crouching lion.  It is addressed in large, bold handwriting to——­”

“I fear, sir,” said Holmes, “that, interesting and indeed essential as these details are, my inquiries must go more to the root of things.  What was the letter?”

“That is a State secret of the utmost importance, and I fear that I cannot tell you, nor do I see that it is necessary.  If by the aid of the powers which you are said to possess you can find such an envelope as I describe with its enclosure, you will have deserved well of your country, and earned any reward which it lies in our power to bestow.”

Sherlock Holmes rose with a smile.

“You are two of the most busy men in the country,” said he, “and in my own small way I have also a good many calls upon me.  I regret exceedingly that I cannot help you in this matter, and any continuation of this interview would be a waste of time.”

The Premier sprang to his feet with that quick, fierce gleam of his deep-set eyes before which a Cabinet has cowered.  “I am not accustomed, sir,” he began, but mastered his anger and resumed his seat.  For a minute or more we all sat in silence.  Then the old statesman shrugged his shoulders.